APA Style
Herrera, Mario, Pinkley, Diane. (2009).
Backpack 4: British English .
London:
Person Education Limited.
Chicago Style
Herrera, Mario, Pinkley, Diane.
Backpack 4: British English.
London:
Person Education Limited,
2009.
Book.
MLA Style
Herrera, Mario, Pinkley, Diane.
Backpack 4: British English.
London:
Person Education Limited,
2009.
Book.
Turabian Style
Herrera, Mario, Pinkley, Diane.
Backpack 4: British English.
London:
Person Education Limited,
2009.
Book.